INSTALLATION AND MAINTENANCE INSTRUCTIONS
SS12/24ADA* Series Strobes and
MASS12/24ADA* Series Horn/Strobes
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
for Fire Protective Signaling Systems
1-800-SENSOR2, FAX: 630-377-6495
*ULC models add suffix “A”; strobes and sounder/strobes available in 24VDC,
15cd only
Table 1. SS12/24ADA Series electrical ratings:
Model Supply
SS24110ADA
SS24110ADAB
SS2475ADA
SS2475ADAB
SS2415ADA
SS2415ADAB
SS1215ADA
SS1215ADAB
SS241575ADA
SS241575ADAB
SS121575ADA
SS121575ADAB
SS2415ADAA
Voltage
10.5-17V 170 - 360/380 0 200 - 330/380 .020
10.5-17V 225 -- 510/560 0 270 -- 500/530 .020
Operating Current from Regulated Supply Operating Current from Full-Wave Rectified Unfiltered
Range
Average
Operating
Current
20-30V 210 470/500 - 0 245 400/500 - .080
20-30V 170 385/400 - 0 200 320/370 - .040
20-30V 75 160/180 - 0 90 275/290 - .020
20-30V 93 210/220 -- 0 120 275/290 -- 1.0
20-30V 175 360/380 -- 0 200 330/380 -- .020
Peak
Current
(mA)
20/30V
Peak
Current
(mA)
10.5V/17V
Inrush
Current
(mA in
access of
Peak)
Average
Operating
Current
(mArms)
Peak Current
(mA)
20Vrms/
30Vrms
Supply
General Description
The National Fire Protection Association has published
standards and recommended practices for the installation
and use of the listed appliances. It is recommended that
the installer be familiar with these requirements, local
codes, and any special requirements of the local fire authority having jurisdiction.
Peak Current
10.5Vrms/
17Vrms
(mA)
Inrush Current
(Amps in excess
of Peak)
connected to either 12 or 24 VDC panels. Models
SS2415ADA, SS2475ADA, SS24110ADA, SS241575ADA,
and combination models incorporating these strobes, require 24 volt panels. Models SS1215ADA, SS121575ADA,
MASS1215ADA , and MASS121575ADA require 12 volt
panels. Panels may have full-wave rectified, unfiltered
power supplies. The strobes produce one flash per second
NOTE: Inrush current duration is less than
20 microseconds (.00002 seconds).
(nominal) with continuous nominal voltage applied.
The Multi-Alert™ sounder and signaling strobe are intended to be connected to the alarm indicating circuit of a
UL-listed fire alarm control panel. Both are compatible
with DC line supervision. The electronic sounder can be
The MA12/24D is suitable for outdoor applications (-35°
to 66° C) when it is used with a WBB Weatherproof Back
Box. The signaling strobe is rated for 0° to 49° C and is
Table 2. Sound Output and Current Ratings for the MA12/24D:
Sound (Hz) Clips on Tabs Current (ma) Output (dBA)
( Note 1) DC Regulated/ (Note 3)
UL (dBA) UL (dBA)
Ratings w/MDL Module
FWR Unfiltered (Note 4) Temp. Tone (Note 5)
12V 24V 30V 12V 24V 12V 24V 12V 24V
Slow Whoop ABC 21/40 38/56 46/72 85 92 79 85 N/A N/A
800 Continuous BC 15/24 28/45 35/55 87 93 79 85 75 79
800/1000 Alternating AC 17/32 34/46 43/58 85 92 79 85 N/A N/A
2400 Interrupted AB 19/23 35/56 43/64 89 90 79 85 N/A N/A
2400 Continuous C 21/31 38/59 46/73 85 94 79 85 75 79
1200 Interrupted B 13/19 23/33 27/41 85 91 75 82 N/A N/A
Swept Frequency A 17/24 34/47 43/60 85 92 79 85 N/A N/A
Fast Warble NONE 15/27 30/47 38/59 85 92 79 85 N/A N/A
Note 1: See Figure 2 for tab clip removal & storage.
Note 2: All models can be powered using full wave rectified unfiltered
supplies. Under no circumstances can SS24ADA or
MASS24ADA series devices input voltage exceed 33 VDC or be
less than 16 VDC (16-33Vrms for full-wave rectified, unfiltered
supplies). Under no circumstances can the MA12/24D input
voltage exceed 33 VDC or be less than 9.6 VDC. Under no cir-
Note 3: Measured at 10 feet in an anechoic chamber.
Note 4: Measured in a UL reverberant room.
Note 5: Only continuous tones (800Hz, 2400 Hz) can be temporally
voltage exceed 18.7 VDC or be less than 9.6 VDC (9.6 -
18.7Vrms for full-wave rectified, unfiltered supplies).
coded per UL. Strobes cannot be used on an MDL module providing temporal coding to Multi-Alert™ horns.
cumstances can a SS12ADA or MASS12ADA series device input
D900-01-00 1 I56-650-17
NOT suitable for outdoor use.
The rated light output of the SS2415ADA, SS1215ADA,
SS241575ADA, SS121575ADA, MASS2415ADA,
MASS241575ADA, MASS1215ADA, and MASS121575ADA
is 15 cd (See Figure 1).
The rated light output of the SS2475ADA and
MASS2475ADA is 75 cd (See Figure 1).
The rated light output of the SS24110ADA and
MASS24110ADA is 110 cd (See Figure 1).
NOTE: The light output at 0° viewing angle for SS12/
241575ADA and MASS12/241575ADA models is 75
cd (See Figure 1).
Any one of eight sounds can be selected on the electronic
sounder, as indicated in Table 2. The sound selected determines the maximum current and sound power output per
device. See Table 1 for these values.
Independent Sounder/Strobe Operation
There may be applications where it is desirable to drive the
sounder and strobe as independent devices. The System
Sensor MASS12/24ADA series sounder/strobes are easily
configured for this capability. The terminal connection for
this application is shown in Figure 6. Independent strobe
operation in a coded system requires a separate uncoded
power supply for the strobe.
Installation
A. General:
Slotted head screws are used to attach each device or
combination of devices to the electrical outlet box.
Phillips head screws are used to attach accessories to the
horn. Refer to Figures 3,4,5, and 6 for wiring methods.
Notes: Do not loop wires under the terminal screw. Wires
connecting the device to the panel must be broken
at the device terminal connection in order to maintain electrical supervision. Strobe and strobe/
horn combination are designed for wall mounting ONLY.
The sounder is 1-1/4" deep. Back boxes must be 4"
square by at least 1-1/2" deep – 2-1/8" deep is
recommended.
All strobes must be mounted so that the top of the lens is
24 inches (61 cm) below ceilings or as required by the
authority having jurisdiction.
B. Sounder mounting:
1. Surface Mount: (See Fig. 7)
2. Semi Flush Mount: (See Fig. 10 and 13)
3. Flush Mount: (See Fig. 12)
C. Sounder/Strobe combination mounting:
1. Surface Mount : (See Fig. 9)
2. Semi Flush Mount: (See Fig. 10 and 13)
Flush mounting requires the use of the deep box (Part #
BB-D) or equivalent. Determine which of the two device
holes will be used to attach the device to the box. Mount
the flush plate to the sounder using the other two holes
with two 1-inch phillips head screws and two square
nuts.
D. Strobe mounting:
1. Surface Mount: (See Fig. 8)
2. Semi Flush Mount: (See Fig. 11)
Installation procedures must conform to all applicable
codes and the requirements of the authority having
jurisdiction.
NOTE: The rated output of the sounder is specified at 10
feet. It cannot be assumed that the output will
meet the NFPA standard of 15 dB over ambient
noise at all locations within a room. Additional
sounders may be needed to ensure sound output
level complies with NFPA requirements.
WARNING
The Limitations of Sounder/Strobes
The Sounder and/or Strobe will not work without power. The sounder/
strobe gets its power from the fire/security panel monitoring the alarm
system. If power is cut off for any reason, the sounder/strobe will not provide the desired audio or visual warning.
The Sounder may not be heard. The loudness of the sounder meets (or
exceeds) current Underwriters Laboratories’ standards. However, the
sounder may not alert a sound sleeper or one who has recently used drugs
or has been drinking alcoholic beverages. The Sounder may not be heard
if it is placed on a different floor from the person in hazard or if placed too
far away to be heard over the ambient noise such as traffic, air conditioners, machinery or music appliances that may prevent alert persons from
hearing the alarm. The Sounder may not be heard by persons who are
hearing impaired.
The Signal Strobe may not be seen. The electronic visual warning signal
that flashes at least once every three seconds meets or exceeds current Underwriters Laboratories’ standard 1971 and uses an extremely reliable xe-
D900-01-00 2 I56-650-17
non flash tube. The visual warning signal is suitable for direct viewing and
must be installed within an area where it can be seen by building occupants. The strobe must not be installed in direct sunlight or areas of high
light intensity (over 60 foot candles) where the visual flash might be disregarded or not seen. The strobe may not be seen by the visually im-
paired.
The signal strobe may cause seizures. Individuals who have a positive
photic response to visual stimuli with seizures, such as epileptics, should
avoid prolonged exposure to environments in which strobe signals, including this strobe, are activated.
System Sensor recommends that the Multi-Alert Sounder and Signal
Strobe always be used in combination so that the risks from any of the
above limitations are minimized.
The signal strobe cannot operate from coded power supplies. Coded
power supplies produce interrupted power. The strobe must have an uninterrupted source of dc power in order to operate correctly.
y
(-)
IN OUT
STROBE
ONLY
(-)
IN OUT
(+)
IN OUT
STROBE
ONLY
(+)
IN OUT
From
panel or
previous
device
To Next
Device
or EOL
- VDC
+ VDC
Figure 1. Vertical and horizontal light distribution:
0˚
45˚
90˚ –90˚
–45˚
LIGHT
Figure 2: Figure 3. Multi-alert sounder:
COVER SLOT
CLIP
STORAGE
FOR STORING UNUSED CLIPS:
SLIDE COVER BACK TO ALIGN COVER SLOT
WITH CLIP STORAGE POST.
SLIDE COVER
FOR CLIP STORAGE
TONE
SELECTION TABS
TAB A
TAB B
TAB C
CLIPS REMOVED OR
ADDED TO SELECT
DESIRED TONE.
USE A
SMALL BLADED
SCREWDRIVER
TO REMOVE
CLIPS
A78-2167-00
Degrees % of Rating
0 100
5 - 25 90
30 - 45 75
50 55
55 45
60 40
65 35
70 35
75 30
80 30
85 25
90 25
A78-1137-00
Figure 4. Strobe:
Figure 5. Multi-alert sounder and strobe operating in
tandem:
To Next
Device
or EOL
– VDC
+ VDC
From
panel or
previous
(+)
device
only.
A78-1137-29
Figure 6. Multi-alert sounder and strobe operating
(–)
(–)
IN OUT
(+)
IN OUT
STROBE
ONLY
IN OUT
IN OUT
STROBE
ONLY
Note: Use uncoded suppl
Figure 7. Sounder surface mount:
independently:
To Next
Device
or EOL
(–)
IN OUT
STROBE
ONLY
Caution: Break off P.C.B. Tabs
(–)
(+)
IN OUT
STROBE
ONLY
IN OUT
(+)
IN OUT
– VDC
STROBE
+ VDC
– VDC
SOUNDER
+ VDC
From
panel or
previous
device
NonCoded
Supply
Can Be
Coded
Supply
A78-1137-01
BB-STD
MA12/24D
A
B
B
A
Screw types used in figure 9 to 15
A = 8-32x1-7/16" Slot
B = #8 Sheet Metal Phillips
C = 8-32x1" Phillips
D = #8 Sq. Nut
E = 8-32x5/8" Slot
F = 8-32x2-3/4" Slot
G = 6-32x5/8" Slot
D900-01-00 3 I56-650-17
1. Complete field wiring. (See Fig. 5)
2. Screw sounder to box with screw A.
3. Fill remaining holes with screw B.
A78-1137-03
MA-12/24D
A
B
B
A
Signal Strobe
Standard
Backbox
Figure 8. Strobe surface mount:
Standard
Backbox
TOP
Figure 9. Sounder/strobe surface mount:
A
Signal Strobe
B
1. Complete field wiring.
2. Screw strobe to box with screw A.
A
B
A78-2514-00 A78-2515-00
3. Fill remaining holes with screw B.
Figure 10. Sounder or sounder/strobe semi-flush
mount:
STANDARD
BACKBOX
MP-SF
E
E
1. Screw plate to box with screw E.
2. Complete field wiring. (See Fig. 3, 4, 5, and 6)
3. Screw sounder or sounder/strobe
to plate with screw A.
4. Fill remaining holes with screw B.
MA-12/24D
A
B
A
A78-2517-01
1. Complete field wiring.
2. Screw sounder/strobe to box with screw A.
3. Fill remaining screw holes with screw B
Figure 11. Strobe semi-flush mount:
STANDARD
BACKBOX
MP-SF
Signal Strobe
TOP
B
C
1. Screw strobe to plate with
A
screw C.
2. Complete field wiring.
3. Screw strobe plate to box with
screw A.
A
C
A78-2516-00
Figure 12. Sounder flush mount (deep box required):
Figure 13. Sounder or sounder/strobe semi-flush
mount with plaster ring:
1. Plaster ring should be properly mounted to electrical box with
D
MA 12/24D
MP-F
C
F
C
F
A78-1137-08
1. Screw sounder to plate.
2. Complete field wiring.
3. Screw plate sounder to box
with screw F.
BB-D
D
D900-01-00 4 I56-650-17
screws supplied with box.
2. Screw plate to plaster ring with screw G.
3. Complete field wiring.
4. Screw sounder/strobe to plate with screw A.
5. Fill remaining holes with screw B.
MA 12/24
G
Standard
Backbox
Plaster
Ring
G
MP-SF
B
© System Sensor 1997
A
A
B
A78-1137-11
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